From: Ingo Molnar <mingo@elte.hu>
To: linux-tip-commits@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@redhat.com,
a.p.zijlstra@chello.nl, tglx@linutronix.de, mingo@elte.hu
Subject: [tip:perfcounters/core] x86, perfcounters: add atomic64_xchg()
Date: Tue, 7 Apr 2009 09:36:45 GMT [thread overview]
Message-ID: <tip-b226fa12991d6ee9b6b13a7e1de88ec5d25f5007@git.kernel.org> (raw)
In-Reply-To: <20090406094518.445450972@chello.nl>
Commit-ID: b226fa12991d6ee9b6b13a7e1de88ec5d25f5007
Gitweb: http://git.kernel.org/tip/b226fa12991d6ee9b6b13a7e1de88ec5d25f5007
Author: Ingo Molnar <mingo@elte.hu>
AuthorDate: Tue, 7 Apr 2009 11:30:17 +0200
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Tue, 7 Apr 2009 11:32:43 +0200
x86, perfcounters: add atomic64_xchg()
Complete atomic64_t support on the 32-bit side by adding atomic64_xch().
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20090406094518.445450972@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
arch/x86/include/asm/atomic_32.h | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/atomic_32.h b/arch/x86/include/asm/atomic_32.h
index 977250e..a9fef6c 100644
--- a/arch/x86/include/asm/atomic_32.h
+++ b/arch/x86/include/asm/atomic_32.h
@@ -306,6 +306,12 @@ static inline void atomic64_set(atomic64_t *ptr, unsigned long long new_val)
} while (atomic64_cmpxchg(ptr, old_val, new_val) != old_val);
}
+static inline void
+atomic64_xchg(atomic64_t *ptr, unsigned long long new_val)
+{
+ atomic64_set(ptr, new_val);
+}
+
/**
* atomic64_read - read atomic64 variable
* @ptr: pointer to type atomic64_t
next prev parent reply other threads:[~2009-04-07 9:37 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-06 9:44 [PATCH 00/15] various perf counter bits Peter Zijlstra
2009-04-06 9:44 ` [PATCH 01/15] perf_counter: update mmap() counter read, take 2 Peter Zijlstra
2009-04-07 9:06 ` [tip:perfcounters/core] " Peter Zijlstra
2009-04-06 9:45 ` [PATCH 02/15] perf_counter: add more context information Peter Zijlstra
2009-04-07 9:07 ` [tip:perfcounters/core] " Peter Zijlstra
2009-04-06 9:45 ` [PATCH 03/15] perf_counter: SIGIO support Peter Zijlstra
2009-04-07 9:07 ` [tip:perfcounters/core] " Peter Zijlstra
2009-04-06 9:45 ` [PATCH 04/15] perf_counter: generalize pending infrastructure Peter Zijlstra
2009-04-07 9:07 ` [tip:perfcounters/core] " Peter Zijlstra
2009-04-06 9:45 ` [PATCH 05/15] perf_counter: x86: self-IPI for pending work Peter Zijlstra
2009-04-07 9:07 ` [tip:perfcounters/core] " Peter Zijlstra
2009-04-06 9:45 ` [PATCH 06/15] perf_counter: theres more to overflow than writing events Peter Zijlstra
2009-04-07 9:07 ` [tip:perfcounters/core] " Peter Zijlstra
2009-04-06 9:45 ` [PATCH 07/15] perf_counter: fix the mlock accounting Peter Zijlstra
2009-04-07 9:08 ` [tip:perfcounters/core] " Peter Zijlstra
2009-04-06 9:45 ` [PATCH 08/15] perf_counter: PERF_RECORD_TIME Peter Zijlstra
2009-04-07 9:08 ` [tip:perfcounters/core] " Peter Zijlstra
2009-04-06 9:45 ` [PATCH 09/15] perf_counter: counter overflow limit Peter Zijlstra
2009-04-07 9:08 ` [tip:perfcounters/core] " Peter Zijlstra
2009-04-06 9:45 ` [PATCH 10/15] perf_counter: comment the perf_event_type stuff Peter Zijlstra
2009-04-07 9:08 ` [tip:perfcounters/core] " Peter Zijlstra
2009-04-06 9:45 ` [PATCH 11/15] perf_counter: change event defenition Peter Zijlstra
2009-04-07 9:08 ` [tip:perfcounters/core] perf_counter: change event definition Peter Zijlstra
2009-04-06 9:45 ` [PATCH 12/15] perf_counter: rework context time Peter Zijlstra
2009-04-07 9:09 ` [tip:perfcounters/core] " Peter Zijlstra
2009-04-06 9:45 ` [PATCH 13/15] perf_counter: rework the task clock software counter Peter Zijlstra
2009-04-07 9:09 ` [tip:perfcounters/core] " Peter Zijlstra
2009-04-07 9:36 ` Ingo Molnar [this message]
2009-04-07 11:19 ` [tip:perfcounters/core] x86, perfcounters: add atomic64_xchg() Paul Mackerras
2009-04-07 13:28 ` Ingo Molnar
2009-04-07 10:06 ` Ingo Molnar
2009-04-06 9:45 ` [PATCH 14/15] perf_counter: remove rq->lock usage Peter Zijlstra
2009-04-07 9:09 ` [tip:perfcounters/core] " Peter Zijlstra
2009-04-06 9:45 ` [PATCH 15/15] perf_counter: minimize context time updates Peter Zijlstra
2009-04-07 9:09 ` [tip:perfcounters/core] " Peter Zijlstra
2009-04-07 9:21 ` [PATCH 00/15] various perf counter bits Ingo Molnar
2009-04-07 9:21 ` Ingo Molnar
2009-04-07 9:33 ` Ingo Molnar
2009-04-07 9:23 ` Ingo Molnar
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